03.12.12 9:45 AM ET

Harris & Ewing Collection / Library of Congress

Break out the cookies, because troops across the country are celebrating their centennial. Relive a century of character building and badges with these vintage photos.

Here, a troop in 1917.

Bettmann / Corbis

Undated portrait of Juliette Gordon Low (center), founder of The Girl Scouts of the U.S.A., with two Girl Scouts in the early years of the movement. The group now bills itself as "the world's preeminent organization dedicated solely to girls."

Bettmann / Corbis

Girl Scouts collecting peach seeds during during World War I. The oil from the seed was used for war industries.

Library of Congress

Girl Scouts at shooting practice, circa 1920-21.

Lewis W. Hine, George Eastman House / Getty Images

Two Girl Scouts making cookies in the 1920s.

Alfred Eisenstaedt, Time & Life Pictures / Getty Images

A Girl Scout salutes the flag using three fingers, 1940.

Bettmann / Corbis

A cookie poster from the 1940s.

Michael Rougier, Time Life Pictures / Getty Images

Brownies from a Girl Scout troop playing at the Indiana Dunes, July, 1960.

AP Photo

Mariner Girl Scouts practice tying nautical knots in March, 1962.

AP Photo

A senior scout teaches a brownie how to plant a garden, March 1962.

AP Photo

Scouts enjoy a cool evening around a campfire at the end of a day's activities, March 1962.

Lake County Museum / Getty Images

Scouts light candles during a ceremony in the 1970s.

Bettmann / Corbis

Eight-year old Brownie Kristina Royer gets fingerprinted by a PTA volunteer at Barnum Woods School in Long Island, New York, May 1983.

Greg Gibson / AP Photo

Hillary Clinton joins in the recitation of the Girl Scout pledge at the governor’s mansion in Little Rock, Arkansas, on Dec. 20, 1992, during a ceremony to honor the Clinton family’s service to Girl Scouting in Arkansas.